Improvement in coal-sifters



UNITED STATES PATENT OFFICE.

WILLIAM W. STEVENS, OF lPORTLAND, MAINE, ASSIGNOR TO NATHANIEL y P.RICHARDSON 8v CO., OF SAME PLACE.

IMPROVEMENT |N COAL-SIFTERS.

Specification forming part of Letters Patent No. 40,449, dated October27, 1863.

To all whom it may sondern:

Be it known that I, WILLIAM W. STEVENS, of the city of Portland, countyof Cumberland, and State of Maine, have invented an Improvenient inCoal-Sitters for the purpose of sifting ashes from coal; and I do herebydeclare that the following is a full and exact description of t-he same,reference being had to the accompanying drawings, and the letters andfigures of reference thereon. v

Of the said representation, Figure 1 represents the cover of the sifter.Fig. 2 represents the body of the sifter. Fig. 3 represents the ringused ou the top of any :round body. Fig. 4 represents the sifter as itappears when placed on the top of a barrel and ready for use.

I do not claim a patent on any part of the sifter, nor on thereciprocating rotary or the rocking motion distinct of themselves, asthey have been patented before.

What I do claim as my invention',and desire to secure by Letters Patent.is-

The combination of the two motions, reciproeating rotary and rockingmotion, as applied to a coalsifter, the rst motion being obtained bymoving the handles A A from left to right or right to left, the secondmotion by turning the handles A A upand down, giving the rocking motion.l

In testimony whereof I have hereunto set inyhand and seal this the 16thday of April, A. D. 1863.

WILLIAM `W. STEVENS. [L s] Witnesses:

W. A. PARSONS, E. R. UPHAM.

